#!/bin/env python
# -*- coding:utf-8 -*-
class Animal(object):
	def run(self):
		print('Animal is running...')
class Dog(Animal):
	def run(self):
		print('Dog is running...')
	def eat(self):
		print('Eating meat...')
class Cat(Animal):
	def run(self):
		print('Cat is running...')
if __name__=='__main__':
	dog=Dog()
	dog.run()
	cat=Cat()
	cat.run()
